Can opener



FIG. 1 is a top, front, left side perspective view of a can openershowing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view therof; and

FIG. 6 is a bottom plan view thereof.

The ornamental design for a can opener, as shown and described.